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Home » Engineering Services » Suspension Development » Closed-Loop Vehicle Dynamics Optimisation » Objective Testing
Objective Testing
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Multimatic's unique multi-post rig testing and vehicle characterisation techniques offer an easily interpreted objective-based methodology for assessing a vehicle's ride and handling performance.
Using in-house developed servo-hydraulic actuators in conjunction with a proprietary controller and software suite, a vehicle's dynamic signature can be identified. The analysis returns data on the dynamic characteristics of the vehicle's structure, suspension and tires as well as an overall assessment of performance. The hardware and engineering process have been optimised to facilitate expedient parametric testing of a large number of vehicle variables in a controlled (lab) environment.
In addition to multi-post testing, Multimatic undertakes both K&C rig evaluation and extensive on-road and on-track data acquisition and analysis. Instrumented testing is undertaken to generate objective vehicle performance measurables and gather road load data for use in durability rig testing. Extensive experience in this area allows efficient and accurate data reduction in order to isolate specific and relevant performance characteristics.
Multimatic's proprietary rig testing methodology offers an excellent link between virtual simulation and subjective testing. Exceptional correlation between calculated performance indices and actual road and track performance is regularly observed.
With multi-post test rigs in both Europe and
North America, Multimatic services both OEMs and the motorsports
community with state-of-the-art facilities, proprietary techniques
and software. |
Multimatic's multi-post rig hardware and engineering
process have been optimised to facilitate expedient parametric testing
of a large number of vehicle variables in a controlled (lab) environment. |
| Objective multi-post rig testing generates: |
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Objective multi-post rig testing offers: |
- a vehicle's unique dynamic performance "signature" (Performance Index / Comfort Rating / Symmetry Rating)
- natural frequencies and damping ratios of a vehicle's heave, pitch and roll modes, and level of coupling
- tire dynamic stiffness
- damper force vs. position and/or velocity
- suspension friction level and installation stiffness
- contact patch loads and variation
- calculated suspension spring rates and damper coefficients
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- highly controlled, repeatable evaluation and comparison of different vehicle configurations
- multiple tuning strategy testing in short periods of time
- sensitivity analysis and trend investigations to aid track development
- a methodology to gain an understanding of the parameters that affect the dynamic response of a specific vehicle or the limitations imposed by a vehicle and its tires
- a guide to "generic" (not track specific) suspension set-ups that achieve optimal control of the vehicle
- relative comparison of a vehicle's ride and handling performance to in-class competitors and targets
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